Coin and method for producing a coin
Coins, medals or casino tokens have a first side, a second side, at least one first layer made of a first material and at least one second layer made of a second material, wherein the first layer is between 10 μm and 90 μm, preferably 20 μm thick. A method produces the coin wherein the coin is produced, more particularly punched, from a clad sheet-shaped composite material. A further method produces the coin wherein the coin is formed from a ring and a core arranged inside the ring. The core and the ring are punched from a clad sheet-shaped composite material and subsequently the core is inserted rotated into the ring and is fixed therein.
1. A device selected from the group consisting of coins, medals and casino tokens, the device consisting essentially of:
a first side;
a second side;
one first layer made of a first material and having a thickness of 10 μm to 90 μm, said first layer forming at least certain portions of said first side; and
at least one second layer made of a second material, said second layer forming at least certain portions of said second side, said first and second materials being different materials, said second material being selected from the group consisting of copper, copper alloy, CuNi25 and CuZn20Ni5.
2. The device according to claim 1 , wherein said second layer has a thickness of 0.8 mm to 2.8 mm.
3. The device according to claim 2 , wherein said second layer has a thickness of 1.8 mm.
4. The device according to claim 1 , further comprising a third layer made of a third material disposed on a side opposite to said first layer.
5. The device according to claim 4 , wherein said first material, said third material or both said first and third materials is selected from the group consisting of copper, a copper alloy, CuNi8, CuNi10, CuZn6723 and CuZn20Ni5.
6. The device according to claim 4 , wherein said first material and said second material and also said first material and said third material are different materials.
7. The device according to claim 1 , wherein said first material, said second material or both said first and second materials have an electrical conductivity of 4 to 106% IACS.
8. The device according to claim 1 , wherein said thickness of said first layer is 20 μm.
9. The device according to claim 1 , wherein said first material, said second material or both said first and second materials have an electrical conductivity of 4 to 30% IACS.
10. A device selected from the group consisting of coins, medals and casino tokens, the device consisting essentially of:
a first side;
a second side;
one first layer made of a first material and having a thickness of 10 μm to 90 μm;
at least one second layer made of a second material, said first and second materials being different materials;
a further second layer made of said second material;
a main body, said second layer and said first layer are disposed on one side of said main body and said further second layer is disposed on an opposite side of said main body; and
said first layer forming at least certain portions of said first side and said further second layer forming at least certain portions of said second side.
11. The device according to claim 10 , wherein said second layer and said further second layer have a thickness of 50 μm to 600 μm.
12. The device according to claim 10 , further comprising:
a ring; and
a core disposed inside said ring, wherein said core, said ring or both said core and said ring have said first layer, said second layer, said further second layer and said main body.
13. The device according to claim 12 , wherein said first layer of said core is disposed on a side opposite to said first layer of said ring.
14. The device according to claim 10 , wherein said second layer and said further second layer are formed of a same material.
15. The device according to claim 10 , wherein said second layer and said further second layer have a thickness of 300 μm to 400 μm.
16. The device according to claim 10 , further comprising a third layer made of a third material disposed on a side opposite to said first layer.
17. The device according to claim 10 , wherein said second material is selected from the group consisting of copper, copper alloy, CuNi25 and CuZn20Ni5.
18. A method for producing a device selected from the group consisting of coins, medals and casino tokens, which comprises the step of:
producing the device from a clad sheet-shaped composite material, the clad sheet-shaped composite material consisting essentially of: a first side, a second side, one first layer made of a first material and having a thickness of 10 μm to 90 μm and at least one second layer made of a second material, the first layer forming at least certain portions of the first side and the second layer forming at least certain portions of the second side, the first material and the second material being different materials, the second material being selected from the group consisting of copper, copper alloy, CuNi25 and CuZn20Ni5.
19. The method according to claim 18 , which further comprises punching the clad sheet-shaped composition material for forming the device.
20. A method for producing a device selected from the group consisting of coins, medals and casino tokens, which comprises the steps of:
punching a core and a ring from a clad sheet-shaped composite material;
subsequently inserting the core turned into the ring; and
fastening the core in the ring, the core, the ring or both the core and the ring consisting essentially of: a first side, a second side, a first layer made of a first material with a thickness of 10μm to 90μm, a second layer made of a second material, a further second layer made of the second material, the second layer and the first layer are disposed on one side of the core and the further second layer is disposed on an opposite side of the core, the first layer forming at least certain portions of the first side and the further second layer forming at least certain portions of the second side, the second layer and the further second layer have a thickness of 50 μm to 600 μm.